Define the remote server to Adaptive Server before using ECDA Option for Oracle and Adaptive Server to access remote data.
Parameters to sp_addserver are:
server_name – the name of the server as it is known to Adaptive Server in the sysservers table.
server_class – the class to use when defining a ECDA Option for Oracle server is direct_connect.
network_name – the name in the interfaces file associated with this server. The network_name parameter defaults to the server_name.
sp_addserver ORACLEDC, direct_connect, ORACLEDC